Apparatus for erecting concrete structures.



G. L. & P. P. VREELAND.

APPARATUS TCR ERECTINC CONCRETE STRUCTURES.

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APPARATUS FOR. ERECTING CONCRETE STRUCTURES 2 SHEETS-SHEET 2.

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Unirnn sra'rns PATENT orrion.

L. VREELAND, 0F HARBRT, MICHIGAN, AND POMEROY P. VREELAND, 0F

I BOZEMAN, MONTANA.

APPARATUS ron, Enne'rING ooNcnE'rE STRUCTURES.

To all te/wm it may concern n Be it known that we, Gruss L. VREELAND and Poimnoy P. VREELAND, citizens of the United States, residing, respectively, at Harbert, in the county of Berrien and State of Michigan, and Bozeman, in the county of Gallatin and State of Montana, have invented a certain new and useful Improvement in Apparatus for Erecting Concrete Structures, of which the following is ya full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

Our invention relates to the art of concrete construction and its object is to provide a method for erecting concrete structures, particularly concrete houses, andfapparatus for carrying out our method.

Our invention provides for the erection of concrete buildings having double walls at a comparatively low cost, the low cost being made possible for the reason that the erection of the walls may be rapidly accomplished inasmuch as it is unnecessary to wait until the lower section, or sections, of the double wall has dried to any great extent before molding the neXt section, or sections,

thereon, and inasmuch as almost all of the apparatus used in forming the walls may subsequently be used upon the building for sheeting, etc., after said apparatus has been utilized in erecting the walls.

In the accompanyingrdrawings illustrating our invention Figure 1 is a perspective view illustrating our molding devices in position for the pouring operation, certain parts of the mold boards being sectioned to more clearly reveal the apparatus; Fig. 2 is a cross-sectional view taken on the line 2, 2 of Fig. 1; Fig. 3 illustrates'V the mold boards in position upon the building footing or foundation ready for pouring the first double wall section, their raised positions being illustrated in dotted lines; and Fig'l illustrates a somewhat modified embodiment of our invention, wherein the inner and outer mold boards for the outer and inner walls, respectively, receive support from timbers extending from the footing or foundation through the space between th parallel walls. -v n Similar reference numerals refer to similar parts throughout the several views.

In employing our invention in the erection of a concrete house we first form the concrete foundation or footing indicated at Specification of Letters Patent.

Application filed .Tune 18, 1913. Serial No. 774,282.

mold boards 6 and 9 may be retained in verticaly position by securing the same by means of clamps 10y t0 uprights 11. Spacing blocks 12 are interposed between mold boards 7 and 8 at the top andbottom and spacing blocks 13 interposed between the tops of the mold boards for each of the par-k allel walls.k iooden pins 1st, having a di-4 ameter substantially equal to that ofa lead Patented Feb. 29, 1916.A

When the foundapencil, are then interposed between the bot-y i tomportions of the mold boards for each of n the parallel walls. The reason lfor having these pins of such small diameter is the fact that they are left embedded in the molded-` concrete walls.

After the mold boards have been positioned and the various spacing blocks placed in position as shown, large clamps or bucks indicated Vat 15, are positioned as shown and operated by driving wedges 16 between the upper ends of the clamping jaws thereof, thus 'exerting a pinching stress upon the mold, boards and spacing blocks and securing a perfectly rigid mold structure. After the pinching stress has been applied as aforesaid, concrete is poured into the spaces between the mold boards 6 and 7 andmold boards 8- and 9. After the first sections of the double wall just molded have set, but not hardened, the clamps or bucks 15 are released and the spacing blocks 12 and 13 and thejmold boards 7 and 8 are removed. kA plurality of twisted tieerods 17 are then placed across the parallel walls just molded and suitable reinforcing L-bars 18 may be placed at the corners, if desired. The mold boards 6 and 9 are then unclamped from the uprights 11 and moved to the positions shown in full lines inFigs. 1 and 2 and in dotted lines in Fig. 3. The said mold boards are then clamped to the uprights 11 and are so retained in their raised positions.- ltshould` then positioned upon the tie-rods 17, Vas shown in Figs. 1, Q. and 3. It should be noted that the boards 7 and 8 are provided with a plurality of notches 7 a and 8a, respectively, which receive the rods 17 and so permit the mold boards to overlap their adjacent concrete walls as indicated. The spacingblocks 13 are then interposed between the uppermost portions of the mold boards G and 7, and 8 and 9, and the spacing blocks 12 areagain interposed between the mold boards 7 and 8. Owing to the fact that the mold boards overlap their adjacent walls as above described, it is unnecessary to space the lower ends of the boards between which the concrete walls are molded. After the mold boards and spacing blocks have been positioned as set forth, the clamps or bucks 15 are again applied and the wedges 16 driven to clamping position. After the pinching stress has again been applied to the mold boards and'spacing blocks, it will be readily seen that the weight of all the mold boards is carried by the uprights 11, thus taking the weight of the molds off the soft vwalls therebeneath. This fact is very important, because we are thus enabled to position the mold boards for other wall the parallel concrete walls for supportingr the boards 7 and 8. These uprights are clamped to their Vrespective mold boards by means of suitable clamps 10a as shown.

The partitions in a building as a rule consist of single walls. In such cases our method is varied, in that the mold boards 7 and 8 are done away with and the spacing blocks are interposed between theboards 6v and 9. The pinching stress is then applied to the mold boards and the method carried out as in the construction of a double wall.

From the above description it will be evident that by means of our improved method and apparatus we are enabled to mold two monolithic rings of concrete encircling the building for each vertical portion of the mold boards 7 and 8. During the `period between the pouring of the concrete and the time that the concrete becomes set water is occasionally sprinkled upon the sides of the mold boards not engaged by the concrete in order to prevent distortion of the mold boards by warping.

OurV method of` wall construction has a particular advantage in that the only special apparatus necessary is the bucks and the small clamps. After a concrete house has been erected, the mold boards may be used for sheeting and Vfalse flooring. Thus it is possible to use new mold boards for each job without any undue wasting of lumber.

TWhat we claim and desire to secure by Letters Patent of the United States is:

1. Apparatus for molding double concrete walls of the class described, comprising in combination a pair of mold members for each wall, devices for supporting the inner mold member for the inner wall and the outer mold member for the outer wall above a previously formed section of double wall and independently of said section, devices for spacing the mold members of each pair, separate spacing` devices arranged to be interposed between the inner mold member for the outer wall and the outer mold member for the inner wall and means for applying a transverse pinching stress to said mold members and spacing devices to firmly clamp the same together, whereby the weight of the inner mold member for the inner wall and the outer mold member of the outer wall, the pinching means and a major portion of the outer mold member for the inner wall and the inner mold member for the outer wall is carried above and independently of the previously formed section of double wall.

2. Apparatus for molding double concrete walls of the class described, comprising in combination a pair of mold members for each wall, timbers for supporting the outer mold member for the outer wall and the inner mold member for the inner wall above a previously formed section of double wall and independently ofl said section, clamps forsecuring the last mentioned mold mem-` ber to said timbers, devices for spacing said mold members from each other, and means for applying a transverse pinching stress to said mold members and vspacing devices to carry the major portion of the weight of the inner mold member for the outer wall and the outer mold -member for the inner wall in suspension with the other mold members.

In witness' whereof, we hereunto' subscribe our names, in the presence of two witnesses.

GiLEs L. VREELAND. roMERoY r. vREELAND.

' Witnesses to the signature of Giles L. Vreeland:

ROBERT F. BRAGKE.

Witnesses to the signature of Pomeroy P.

Vreeland: f

CHARLES E. DUNLOP,

lFnsi) F.. WILLsoN.

Copies of this patent mayv be obtained for five cents each, by addressing the Gommissioner of Patents, Washington, D. O. 

